试题与答案

(1)-9+0.25-(-8)+14(2)-1+13×(-3)(3)(34-59

题型:解答题

题目:

(1)-9+0.25-(-8)+
1
4

(2)-1+
1
3
×(-3)

(3)(
3
4
-
5
9
+
7
12
)÷(-
1
36
)

(4)-14-(-2)3+8÷0.25×(-2)2

答案:

(1)原式=-9+

1
4
+8+
1
4
=-
1
2

(2)原式=-1-1=-2;

(3)原式=(

3
4
-
5
9
+
7
12
)×(-36)

=

3
4
×(-36)-
5
9
×(-36)+
7
12
×(-36)

=-27+20-21

=-28;

(4)原式=-1+8+8×4×4

=-1+8+128

=135.

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